Python : Modules and Packages

Python : Modules and Packages

1. Python Modules

   • The Modules in Python ar just some fils with .py Extension
     • In these fils we can write any Python code and excute it from the main Python file
       • To do that we use """import ModulsName""" and ModulsName..functionsName()
         • If we want to call these functions whithout using the ModulsName we write: from ModulsName import FunctionsName
           • Look at this Explaining Example

2. Python Packages

   • We use Packages to group or combine different Modules into one file
     • Like the Modules ,Packages containe files with some code to execute in the main Python file
       • it's necessary to add a file named""__init__ .py"",this is the initialization Python file, it allows us to import the whole folder
         • also in packages, we use """from Package'sName import Module'sName""" and Modul'sName..Function'sName()
           • Look at this explaining Example

3. Some Built-in Modules in Python

   • Random Modules
     • Random() : Gives a random number between 0.0 and 1.0
     • Randint("Start number","End number") : Gives a random integer number in a given range
     • randrange("Start number","End number","Step") : Gives a random number in a range using a specific number of steps
     • Uniform("Start float number","End Float number") : Gives a random float number in a range
     • shuffle(Sequence'sName) : Reorder the list items arbitrarly
     • choice(Sequence'sName) : choice a random item from a list or a tuple or a set
     • sample(Sequece'sName , number_of_items) : choice a number of items randomly
   • Date and Time Modules
     • datetime..now() : Gives the current date with the hour, nminutes and seconds
     • date..today() : Gives the current date with the year, month, and day
     • We can use the atributes : year, month, day ,hour,minute,second to print the year,month,day,hour,monute,or second
     • if we want to print a specific date we use datetime(year,month,day,hour,minute,second)
     • use total_seconds to know how many seconds in a date
   • Look at this Explaining Exampe
   • Look at this Explainong Example

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